Detailed explanation of Java enumeration usage

In actual programming, there are often such "data sets", their values are stable in the program, and the elements in the "data set" are limited.

For example, seven data elements from Monday to Sunday form a "data set" of a week, and four data elements from spring, summer, autumn and winter form a "data set" of four seasons.

How to make better use of these "data sets" in Java? Therefore, enumeration comes in handy. The following code describes the usage of enumeration in detail.

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